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प्रश्न
The shape of guard cells changes due to change in the
विकल्प
protein composition of cells
temperature of cells
amount of water in cells
position of nucleus in the cells
उत्तर
amount of water in cells
Explanation -
Excess water makes the guard cell turgid and lack of water makes the guard cell flaccid. When the guard cell is turgid stomata open. When it is flaccid, stomata closed.
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संबंधित प्रश्न
What are the two parts of peripheral nervous system?
The two antagonistic components of the autonomic nervous system are ______ and ______.
______ carries sensation’s from the organs to the brain.
Give the name, type and origin of the following cranial nerve:
Number-II
Which one of the following cranial nerves is responsible for hearing and equilibrium?
Differentiate between sympathetic and parasympathetic nervous system with reference to the following:
- Pre and post-ganglionic nerve fibres
- Effect on heartbeat
Give the name and function of VIth cranial nerve.
Give the name and function of VIIth cranial nerve.
Give the name and function of VIIIth cranial nerve.
Assertion (A): Sympathetic nervous system prepares the body for violent action against abnormal conditions.
Reason (R): Sympathetic nervous system accelerates heartbeat.
Which of the following is correct?
